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Finding the Fourth Proportional to 103,423.00, 155,143.43 and 28,543.16

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Solution

The fourth proportional to 103,423.00, 155,143.43 and 28,543.16 is: 42,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,423.00 : 155,143.43 = 28,543.16 : x
  2. Step 2: Convert to fraction form
    103,423.00/155,143.43 = 28,543.16/x
  3. Step 3: Cross multiply
    103,423.00x = 155,143.43 × 28,543.16
  4. Step 4: Simplify right side
    103,423.00x = 4,428,283,385.49
  5. Step 5: Solve for x
    x = 4,428,283,385.49/103,423.00
  6. Step 6: Final answer
    x = 42,817.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.